Rigify Error Message
It looks like your bone hierarchy is messed up. It's ok that the thumb is a sibling of the index finger and they are parented to palm.01. But palm.01.L should be parented to hand.L, and the hand should be parented to forearm.L and so on.
It's basically spine &gt; shoulder &gt; arm &gt; hand &gt; palm &gt; fingers.
For the chin and jaw bones, it's like: spine &gt; face &gt; jaw &gt; chin
For testing, I've created a human meta rig and cleared the parent of palm.01.L. It's now a sibling of the spine.
This is wrong and Rigify complains about it with the same error message you posted.
To fix it you need to select the bones (in Edit mode), child first, parent last, and parent them (Ctrl+P) with Keep Offset. Select the whole bone, not only the head or tail. With Alt+P you can separate them if needed.